What’s Vulnerable › Vulnerabilities

CVE-2021-27582

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-02-23 · updated 2026-06-17
• Weakness: CWE-1321

Description

org/mitre/oauth2/web/OAuthConfirmationController.java in the OpenID Connect server implementation for MITREid Connect through 1.3.3 contains a Mass Assignment (aka Autobinding) vulnerability. This arises due to unsafe usage of the @ModelAttribute annotation during the OAuth authorization flow, in which HTTP request parameters affect an authorizationRequest.

Affected products

• Mitreid Connect: through 1.3.3

References

• http://agrrrdog.blogspot.com/2017/03/autobinding-vulns-and-spring-mvc.html
• https://github.com/mitreid-connect/OpenID-Connect-Java-Spring-Server/commit/7eba3c12fed82388f917e8dd9b73e86e3a311e4c
• https://portswigger.net/research/hidden-oauth-attack-vectors
• http://agrrrdog.blogspot.com/2017/03/autobinding-vulns-and-spring-mvc.html
• https://github.com/mitreid-connect/OpenID-Connect-Java-Spring-Server/commit/7eba3c12fed82388f917e8dd9b73e86e3a311e4c
• https://portswigger.net/research/hidden-oauth-attack-vectors

Get alerted when CVE-2021-27582 or the next vulnerability affects your stack